Accurate diagnosis and proper evaluation of both location and spatial structure of the aneurysms have become critical for clinical treatment of the disease.
准确诊断、评价颅内动脉瘤的位置及空间结构，对临床治疗意义重大。
By index evaluation and empirical analysis, we discuss the pattern and time gradient of Beijing-Shanghai railway's effects on regional spatial structure.
通过比较回归方程系数的大小变化、正负变化，研究京沪铁路对经济、社会、资源、环境的影响变化情况。
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